Question

I came home early to watch the match. This is a answer what should be the question

Answer 1

Why I came to home early?

Answer 2

The statement after forming a question from it is following - Why did I come to home early?

A sentence can be referred as the textual unit that consists of 1 or more than 1 word which is linked grammatically in case of non-functional linguistics.

In case of functional linguistics, a sentence can be the unit of the written texts which are delimited by various features i.e. upper case letters and exclamation marks.